The Ergo pistol caliber carbine buffer Spacer is an essential upgrade for enthusiasts and professionals using 9mm AR firearms. Specifically engineered for compatibility with carbine length buffers this spacer plays a crucial role in optimizing the performance and longevity of your firearm. By effectively limiting rearward travel, it significantly reduces the risk of bolt catch breakage, ensuring smoother operation and enhanced reliability during use. Crafted from high-quality 6061-T6 aluminum, the buffer spacer offers exceptional durability and strength, making it a robust addition to your firearm setup. Its precision machining guarantees a perfect fit and seamless integration with your existing components. Designed to accommodate 9mm, .40 and .45 calibers, this versatile spacer is ideal for a wide range of applications, providing consistent performance across different setups. Whether you're a competitive shooter, a tactical operator or a firearm enthusiast, the Ergo pistol Caliber carbine buffer Spacer is a smart investment to enhance the functionality and durability of your AR platform. Experience improved performance and peace of mind with this expertly crafted component. Constructed from 6061-T6 aluminum Designed for compatibility with 9mm AR firearms